Uintah
Precision
The world's only manufacturer of true bolt action AR uppers. Patented 3-lug bolt technology with a sub-MOA guarantee. Made in Utah, USA.
The Only True Bolt Action AR in the World
975,000 Failed Attempts.
One Perfect Solution.
Uintah Precision was born from Uintah Machine, a Utah-based manufacturer that originally built coal mining machinery. When work slowed in 2008–2010, founder Richard Hamilton faced a choice: lay off his team or pivot entirely.
Hamilton had long noticed that firearms companies were building AR "style" bolt actions — chassis conversions that looked like bolt actions but didn't function as one. He asked a simple question: why hadn't anyone built a true bolt action receiver? The answer was that it was genuinely difficult to engineer.
After 975,000 failed prototypes, one finally worked. Uintah Precision now holds the only patent for a true bolt action AR upper — a 3-lug bolt with a 60° throw that delivers genuine bolt action mechanics in an AR platform.
Patented Technology
True 3-Lug Bolt Action
Patented 3-lug bolt with a 60° throw — the only genuinely true bolt action AR in the world. Not a chassis conversion, not a cosmetic modification. A real bolt action mechanism.
Sub-MOA Guarantee
Every UPR and UP rifle ships with a sub-MOA accuracy guarantee using factory match grade ammunition. Precision backed by engineering.
Drop-In Compatibility
The UPR upper pins directly onto any mil-spec standard AR lower. Keep your existing trigger, ergonomics, and magazine compatibility.
Made in USA
Designed and manufactured in Utah. Every component built to exceed MilSpec. American precision engineering.
AR-15 & AR-10 Platforms
Product Gallery
UP-15 Complete
Complete Bolt Action AR-15 Rifle — Ready to Shoot
The UP-15 Complete includes the UPR-15 upper receiver mated to a Uintah Precision lower receiver. A fully assembled bolt action AR-15 ready to configure with your preferred optic and accessories.
Uintah Precision in the Field
True bolt action performance in real-world conditions.
Down to the Details
Field Position
True Bolt Action
22 ARC Ranger
11in 338 ARC
Trade Enquiries Welcome
Uintah Precision products are available in the UK exclusively through Steelfoot Imports. Contact us to discuss stock availability, pricing, and RFD transfer arrangements for your dealership.